The tracklisting has changed for the last track (10) :

http://en.wikipedia.org/wiki/20Ten

track 10. "20Ten" (hidden track)

then it's (again) :

track 10. Untitled hidden track

Which of these 2 options are true?

Does the "20Ten" album include a title track, or not ???

Maybe the hidden track is "Stand up and B Strong". The one he sang for the Ebony magazine interviewer at Paisley Park, after the photoshoot,